Theories of Electromagnetism

Testing nonclassical theories of electromagnetism with ion interferometry.

We discuss using a tabletop ion interferometer to search for deviations from Coulomb's inverse-square law. Such deviations would result from nonclassical effects such as a nonzero photon rest mass. We discuss the theory behind the proposed measurement, explain which fundamental, experimentally controllable parameters are the relevant figures of merit, and calculate the expected performance of s...

Clifford Valued Differential Forms, and Some Issues in Gravitation, Electromagnetism and " Unified " Theories *

e Ontology of Electromagnetism

Electromagnetism is usually understood as a theory describing how charged particles and eletromagnetic elds interact. In this paper I argue that a double ontology comprising both particles and elds is problematic. Either we should think of electromagnetism as a theory about charged particles directly interacting with each other, or as theory of elds whose local interactions are manifested as...

Solution of Electromagnetism Theory Problems

Maxwell equations are the basis of the theory of electromagnetic fields. In the stationary case they split into independent problems for electric and magnetic fields. For the electric field in conductive media electrical conductivity problem is formulated, and in insulators the problem of electrostatics is formulated. Equations for stationary problems are of elliptic type, whereas in general th...

A Brief History of Electromagnetism

Understanding the connections between magnetism and electricity and exploiting that understanding for technological innovation dominated science in the nineteenth century, and yet no one saw it coming. In the index to Butterfield’s classic history of the scientific revolution [3], which he locates roughly from 1300 to 1800, the word “electricity” does not appear. Nobody in 1800 could have imagi...